1/ TRUE OR FALSE:A variable that measures "crime severity" with the categories violent felony, nonviolent felony, and misdemeanor is measured at the nominal level.

Group of answer choices

True

False

2/A medical sociologist is interested in assessing the level of stress (i.e., cortisol) among youth living in different Columbus neighborhoods. She collected saliva from 20 research participants (n=20) across two different neighborhoods to measure the level of cortisol of each youth in her study. She found the following values for her variable "cortisol level" (measured in mcg/dL): 16, 5, 13, 22, 17, 1, 9, 20, 19, 16, 7, 20, 14, 2, 23, 23, 15, 21, 3.

Question: What is the level of measurement of the above variable?

Group of answer choices

Nominal

Ordinal

Interval-Ratio

3/To understand more about racial discrimination in elementary schools, Jenna collected sample data on 100 5^th grade students (n=100). In this sample data, Jenna has a variable called "teachersupport" that measures the level of support that the student believes they receive from their teachers. The variable is measured by the following response categories: 1 - Very Supportive, 2 - Fairly Supportive, 3 - Neither Supportive nor Unsupportive, 4 - Fairly Unsupportive, and 5 - Very Unsupportive.

Question: What is the level of measurement of the variable?

Group of answer choices

Nominal

Ordinal

Interval-Ratio

4/Question: Which of the following is an example of a variable measured at the interval-ratio level?

Group of answer choices

Respondent's age when they entered college, measured by two values: (a) 25 and younger, and (b) 26 and older

Educational attainment, measured by values like less than high school, some college, Bachelor's degree, etc.

Respondent's age at first birth, measured by respondent's actual age (in years) when their first child was born

Support for President Biden's student loan forgiveness policy, measured by values ranging from 1 to 5 where 1 represents "Strongly Oppose" and 5 represents "Strongly Support"

5/ _______________ data includes all possible respondents for a given variable from a given unit of analysis.

Group of answer choices

Sample

Population

6/What branch of statistics uses statistical values to describe some aspect of a variable?

Group of answer choices

Inferential Statistics

Descriptive Statistics

7/Using the same information as the question above (table re-copied below), answer the following question: What is the level of measurement of the variable measuring coffee consumption last week?

Cups of Coffee Consumed Last Week	Frequency (f)
None	3
A few cups per week	4
One cup per day	2
More than one cup per day	3
TOTAL	12

Group of answer choices

Nominal

Ordinal

Interval-Ratio

8/Using the information in the table below, calculate the relative percentage of respondents who say that they consumed exactly one cup of coffee per day last week.

Cups of Coffee Consumed Last Week	Frequency (f)
None	3
A few cups per week	4
One cup per day	2
More than one cup per day	3
TOTAL	12

Group of answer choices

63.6%

81.8%

16.7%

36.4%

9/RUE OR FALSE:When comparing two frequency distributions with different sample sizes, it is appropriate to reference the frequencies (i.e., raw count) of observations across the same response category. For example, if I wanted to compare the educational attainment of Bigtown residents (n=400) versus Smalltown residents (n=500), I could compare the number of people who graduated from college in Bigtown (f=156) to the number of people who graduated from college in Smalltown (f=203) and conclude that more college-educated people live in Smalltown relative to Bigtown.

Group of answer choices

True

False

10/According to lecture, we should only use the word ________ to refer to response categories with more than half (i.e., 50% or more) of the sample's total observations.

If a response category has the largest share of observations relative to other response categories but does not meet the 50% threshold (e.g., 48% of observations in one category), we would use the word ________ to describe that response category.

Group of answer choices

plurality ; multiplicity

majority ; plurality

multiplicity ; majority

plurality ; majority

11/Using the information in the table below, calculate the relative percentages for the empty cells (i.e., for Twitter and Instagram).

Last year, we asked 500 high school seniors (i.e., 12^th graders) to name their favorite social media app.

Favorite Social Media App	Frequency (f)	Relative Percentage
TikTok	204	40.8%
Twitter	119
Instagram	127
Facebook	16	3.2%
Other	34	6.8%
TOTAL	500	100.0%

Group of answer choices

Twitter: 26.0%, Instagram: 23.5%

Twitter: 23.8%, Instagram: 25.4%

Twitter: 25.3%, Instagram: 26.0%

Twitter: 24.5%, Instagram: 23.8%

12/Using the information in the table below, calculate the cumulative percentages for the empty cells.

Last February, we asked a sample of 250 undergraduate students how many hours they spent studying each week, on average.

# of Hours Studying	Frequency (f)	Relative Percentage	Cumulative Percentage
0 to 3 hours	24	9.6 %	9.6%
4 to 7 hours	49	19.6%
8 to 11 hours	103	41.2%
12 to 15 hours	67	26.8%
16 or more hours	7	2.8%	100.0%
TOTAL	500	100.0%

Group of answer choices

29.2%, 65.3%, 90.0%

60.8%, 70.4%, 97.2%

29.2%, 70.4%, 97.2%

19.6%, 41.2%, 26.8%

13/Sam created a grouped frequency for his Statistics homework assignment, but his professor took off points because Sam made a mistake when creating his class intervals. Pictured below is a reproduction of Sam's incorrect grouped frequency:

# of Alcoholic Beverages Consumed Nightly	Frequency (f)
0	12
1 to 3	34
3 to 10	14
TOTAL	60

Question:What is wrong with Sam's class intervals?

Group of answer choices

They overlap (meaning they are not mutually exclusive).

They include 0 AND they are unequal widths.

They are unequal widths.

They overlap (meaning they are not mutually exclusive) AND they are unequal widths.

They include 0.